Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 18mm and 18mm give 3 controllable stop positions across a 36mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 118 mm
- Stroke 218 mm
- Total travel36 mm
- Positions3 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S
The SCT32X18X18S is a tandem multi-position cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stop (18 mm), and full extension (36 mm). It achieves this by combining two 18 mm stroke piston sections on a single 12 mm diameter rod, giving you precise, repeatable stops without external hard stops or complex controls.
Each actuated section generates 402 N of push force at 0.5 MPa, rising to 724 N at the maximum operating pressure of 0.9 MPa. The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The body length A is 233 mm, and it uses PT1/8 ports with an M10x1.25 rod thread.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 18 / 18 mm |
| Total travel | 36 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke / section | Up to 500 mm standard |
Specifications follow the official AirTAC SCT (multi-position) datasheet. SCT is available in bores 32–100; each of the two sections has a 500 mm max standard stroke (800 mm max). Confirm against the product label before installation. Thread options: PT (standard) / G.
Stop Positions (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 18 mm |
| P2 (both extended) | 36 mm |
Positions are set by pressurising section 1, section 2, or both. With equal strokes you get 3 distinct positions; with unequal strokes you get 4.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Force is per actuated piston section (single-piston, same as the SC bore): push uses the full bore area, pull subtracts the rod area. Size with a safety margin.
Model Code: Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×18 | Stroke 1 (section 1) in mm. |
| ×18 | Stroke 2 (section 2) in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCD (double rod), SCJ (adjustable stroke). SCT mounting: Basic, FA, FB, CA, CB, LB. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S Is Used
3-Way Diverter Gate
Uses the three discrete positions (0, 18, 36 mm) to direct small parts into three separate chutes or lanes on a packaging line.
Two-Stage Ejector
Provides a partial eject (18 mm) for inspection and a full eject (36 mm) for rejection, all from one compact actuator with sensor confirmation.
Micro-Stop Assembly Fixture
Offers precise, repeatable 18 mm increments for positioning components during gluing or pressing operations in small device assembly.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S the Right Cylinder?
Choose the SCT32X18X18S when your application needs three distinct mechanical stops in a compact, 32 mm bore package. This model is ideal for light sorting or diverting tasks where two separate standard cylinders would require more space and additional mounting hardware. If you need higher force, stepping up to the 40 mm bore provides 628 N of push force per section at 0.5 MPa.
For a direct replacement, match the 32 mm bore, both 18 mm strokes, the PT port thread, and the integrated magnet (-S). This basic mount version comes without brackets, allowing you to use your existing SCT-compatible mounting accessories. Note that strokes under 25 mm are non-standard, so this is a special-order configuration.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 18 + 18 mm suit your layout?
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Plumb the two sections to the correct valves for each stop.
- check Adjust end cushion screws for smooth stops.
- check Use SCT mounting accessory (FA / FB / CA / CB / LB).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X18X18S FAQ
It provides 3 discrete mechanical stop positions because both strokes are equal at 18 mm. The rod positions are 0 mm (fully retracted), 18 mm (first section extended), and 36 mm (both sections extended for total travel).
Functionally, two separate cylinders could be sequenced, but the SCT32X18X18S achieves the three stops in a single, pre-aligned body with a common rod, saving space and eliminating the need to synchronize two actuators. A direct replacement must be an AirTAC SCT with a 32 mm bore, both strokes at 18 mm, and the -S magnet option.
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